Nope, still no dependency management in the base system!
There is some dependency management in stuff like #sbopkg or (if you are a weird person like me) in runing #pkgsrc or #guix on #slackware ...
#sbopkg #pkgsrc #guix #slackware
@birnim you could use #sbopkg or #sbotools to handle the #slackbuilds.
#sbopkg #sbotools #slackbuilds